That slurry is fantastic for compost piles. It’s loaded with bacteria and nutrients, and seeps down into the pile to help jumpstart the internal brown waste decomp. Extra bonus if you add it right after turning (if you bother with that).

I… may forget, and let things liquify more than I’d care to admit… which is great news in fall and spring (added heat from active microbes helps warm the pile and keep it active longer), less great in winter when the pile is frozen solid.